CAR Reasoning A
1 An object at rest will stay at rest unless acted upon by a force.
2 The car tended to stay in one place as the board moved under it following this principle.
3 The wheels and axles reduced the friction between the car and the board, so there was little force acting on the car.
Since it takes a force to change the motion of an object and the friction between the car and the board were reduced, the car tended to stay at rest.
CAR Reasoning B
1 Acceleration will equal the force on an object divided by its mass. (A = F/m)
2 The force between the car and the board moving under it was greatly reduced by the wheels and axles, so force in the above relationship will be tiny.
3 Since friction was reduced between the car and the board, little force was transferred to the car, so the car did not accelerate much as indicated by
a = f/m and pretty much stayed at rest.
1 An object at rest will stay at rest unless acted upon by a force.
2 The car tended to stay in one place as the board moved under it following this principle.
3 The wheels and axles reduced the friction between the car and the board, so there was little force acting on the car.
Since it takes a force to change the motion of an object and the friction between the car and the board were reduced, the car tended to stay at rest.
CAR Reasoning B
1 Acceleration will equal the force on an object divided by its mass. (A = F/m)
2 The force between the car and the board moving under it was greatly reduced by the wheels and axles, so force in the above relationship will be tiny.
3 Since friction was reduced between the car and the board, little force was transferred to the car, so the car did not accelerate much as indicated by
a = f/m and pretty much stayed at rest.